Probably impact pressures from meteorites. I suppose heat during the process may be involved but NWA3136 fragments look quite similar to actual regolith. I would imagine impact melting would change its appearance more as NWA482 has obvious melt veins which lunar anorthosite return samples don't seem to have.
What do I know! Probably completely wrong. I've only seen little bits. Rob McC --- Darren Garrison <[EMAIL PROTECTED]> wrote: > I'm wondering how lunar/asteroidal regolith becomes > reprocessed into solid > brecciated stones. Is it reburied to a depth that > heat and pressure do the job, > or maybe "cold welding" plays a role? > ______________________________________________ > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
